<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>图片列表，鼠标移入/移出改变图片的透明度</title>
</head>
<link rel="stylesheet" href="./css/index.css">
<script src="./JS/index.js"></script>
<body>
    <ul id="ul">
        <li><img src="./images/1.jpg" alt=""></li>
        <li><img src="./images/2.jpg" alt=""></li>
        <li><img src="./images/3.jpg" alt=""></li>
        <li><img src="./images/4.jpg" alt=""></li>
        <li><img src="./images/5.jpg" alt=""></li>
        <li><img src="./images/6.jpg" alt=""></li>
        <li><img src="./images/7.jpg" alt=""></li>
        <li><img src="./images/8.jpg" alt=""></li>
        <li><img src="./images/9.jpg" alt=""></li>
        <li><img src="./images/10.jpg" alt=""></li>
    </ul>
</body>

</html>